Questions Asked in January 2011

Most Popular Questions of January 2011

  1. english

    Which words/phrase in this sentence is misplaced? Having been discovered, Rover looked up at his owner with puppy-dog eyes. a. with puppy-dog eyes b. been discovered c. his owner d. rover looked up I am torn between (a.) and (c.). Since the answer (c.)

    asked by Karen on January 28, 2011
  2. physics

    During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip?

    asked by thaokieu on January 30, 2011
  3. chemistry

    What is H+(aq) + –OH(aq) H2O(l)

    asked by cathy on January 15, 2011
  4. desity

    A fish tank holds 35 {\rm gal} of water. Using the density of 1.0 {\rm g/mL} for water, determine the number of pounds of water in the fish tank

    asked by Anonymous on January 28, 2011
  5. Cochise College

    how many kilojoules are required to raise the temperature of a 150. g sample of silver from 25 °C to 135 °C? Silver has a specific heat of 0.235 J/g °C.

    asked by Emi on January 28, 2011
  6. physics

    a constant force can at on an object for diferrent lengths of time. as the length of time the force acts increases, the impulse imparted to the object increases decreases remians the same

    asked by john on January 5, 2011
  7. Calculus

    log3 x-log3(1-x)=3

    asked by Zukii on January 17, 2011
  8. math

    which is the solution for x in terms of the variables in the equation x/y -z = rw a)x=y (z+rw) b)x=z/y (rw) c)x=rw+yz d)x=y+1/2(ryz)

    asked by Anonymous on January 18, 2011
  9. Calculus

    If a ball is thrown in the air with a velocity 44 ft/s, its height in feet t seconds later is given by y = 44t - 16t2. (Round your answers to one decimal place.) (a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second.

    asked by Ethan on January 17, 2011
  10. Chemistry

    Rank the following fertilizers in decreasing order of mass percentage of nitrogen: NH3 NH4NO3 (NH4)2HPO4 KNO3 (NH4)H2PO4 (NH4)2SO4

    asked by Anonymous on January 16, 2011
  11. math

    Julia has 32 sheets of paper remaining in her 200 page note book. What percentage of the paper has she used?

    asked by Anonymous on January 18, 2011
  12. College Accounting

    P2-1A Frontier Park was started on April 1 by C. J. Mendez and associates. The following selected events and transactions occurred during April. Apr. 1 Stockholders invested $40,000 cash in the business in exchange for common stock. 4 Purchased land

    asked by Jaycee on January 15, 2011
  13. Geometry

    The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?

    asked by Anal-G on January 20, 2011
  14. math

    Lana has $60. She spends 80% of the money. She invests the remaining amount and earns a profit of 80%. How much money does she now have?

    asked by Anonymous on January 18, 2011
  15. Chemistry e

    The rusting of iron is represented by the equation 4Fe +3O2 --> 2Fe2O3. If you have a 1.50-mol sample of iron, how many moles of Fe2O3 will there be after the iron has rusted completely? a. 0.50 mol b. 0.75 mol c. 1.0 mol d. 1.50 mol e. 2.0 mol --> I got

    asked by Kaye on January 18, 2011
  16. math

    What is the correct simplification of the equation 6x-4y-3x+y

    asked by Anonymous on January 18, 2011
  17. Chemistry

    Many power plants produce energy by burning carbon-based fuels, which also produces CO2. CO2 is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2 (g)

    asked by Harold on January 27, 2011
  18. math

    if the pediatric floor of a hospital has 165 beds, how many rooms are there if each room hold 3 beds?

    asked by Anonymous on January 18, 2011
  19. physics

    The components of vector A are Ax and Ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Find the angle θ if the components of the displacement vector A are (a) Ax = 11 m and Ay = 11 m, (b) Ax = 19 m and Ay = 11 m,

    asked by thaokieu on January 30, 2011
  20. Literature

    What are some of the poetic devices used in this poem by Gladys Cardiff? -diction -end-stopped -lyric -symbol -syntax Bending, I bow my head And lay my hand upon Her hair, combing, and think How women do this for Each other. My daughter's hair Curls

    asked by Sarah on January 12, 2011
  21. chemistry

    A sample of propane(c3h8)has 3.84x10^24 H atoms. a) how many carbon atoms does the sample contain? b) what is the total mass of the sample?

    asked by Jessica on January 15, 2011
  22. physics

    three point charges are placed at the following points on the x-axis: +2µC at x=0, -3µC at x=40 cm, -5µC at x=120 cm. Find the force (a) on the -3µC charge (b)on the -5µC charge.

    asked by Joanna Luz on January 24, 2011
  23. statistic

    roll 2 standard dice and add the numbers. what is the probability of getting a number larger than 9 for the first time on the third roll?

    asked by linn on January 15, 2011
  24. math

    Pat deposits $600.00 in a saving accounts at a simple interest rate of 6% per year for five years. How much money will pat have earned in interest at the end of five years?

    asked by Anonymous on January 18, 2011
  25. Physics

    An 800N billboard worker stands on a 4m scaffold weighing 500N and supported by vertical ropes at each end. How far would the worker stand from one of the supporting ropes to produce a tension of 550N in that rope?

    asked by Anonymous on January 2, 2011
  26. physics

    1 kg of ice at 0° C is mixed with 9 kg of water at 50° C (The latent heat of ice is 3.34x105 J/kg and the specific heat capacity of water is 4160 J/kg). What is the resulting temperature?

    asked by calous --- HELP PLEASEE!!! on January 23, 2011
  27. physics, dynamics

    Car A starts from rest at t = 0 and travels along a straight road with a constant acceleration of 2 m/s2 until it reaches a speed of 27 m/s. Afterwards it maintains this speed. Also, when t = 0, car B located 2000 m down the road is traveling towards A at

    asked by siti on January 13, 2011

    The main purpose of a peer review committee is to A. identify activities that suggest guidelines aren’t being followed. B. establish procedures for confidentiality of incident reports. C. examine the work habits of individual employees who have access to

    asked by COLLINS on January 22, 2011
  29. physics

    The drawing shows a uniform electric field that points in the negative y direction; the magnitude of the field is 4540 N/C. Determine the electric potential difference the following points VB − VA between points A and B VC − VB between points B and C

    asked by Anonymous on January 15, 2011
  30. maths/ physics

    Determine the two square roots of 3+j4 in both a)Cartesian form b) Polar form Any help with this question would appreciated

    asked by jon smith on January 3, 2011
  31. statistics

    What percent of the observations in a distribution lie between the first quartile and the third quartile? A. 75%. B. 50%. C. 25%. D. None of the above.

    asked by Anonymous on January 11, 2011
  32. Physics

    As a train accelerates from a station, it reaches a speed of 4.7m/s in 5.0s. If a train acceleration remains constant what is its speed after an additional 6.0s has elapsed?

    asked by Lesh on January 21, 2011
  33. math

    If lessa is paid $2,3500.00 monthly and has $468.00 withheld from each monthly paycheck, what is her annual net salary?

    asked by Anonymous on January 18, 2011
  34. chemistry

    Is this a buffer system? NH3/(NH4)2SO4? It is formed by mixing NH3 (weak base) and a strong acid (H2SO4), but according to my worksheet it is not a buffer system. Why is this so? Isnt it a buffer as long as it consists of a weak base and its salt of a

    asked by seth on January 13, 2011
  35. Physics

    A man using a 70 kg garden roller on a level surface exerts a force 20 kgf at 45 degrees to the ground . Find the vertical force of the roller on the ground if he ; a) pulls the roller. b) pushes the roller.

    asked by Joseph on January 10, 2011
  36. Physics

    When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic energy, the potential energy of the car decreases. Where does this energy go? Where does most of it appear in a hybrid vehicle?

    asked by Sarah on January 2, 2011
  37. physics

    A point charge with charge q1 is held stationary at the origin. A second point charge with charge moves from the point (x1,0) to the point (x2,y2). How much work is done by the electrostatic force on the moving point charge? Express your answer in joules.

    asked by Cassie on January 24, 2011
  38. chemistry

    while hiking near the mouth of the river, malcolm finds a fine grained that break into flat pieces. This an example of what type of rock? a)magna b)igneous c)matamorphic d)sedimentary

    asked by Anonymous on January 20, 2011
  39. electromagnatic

    a) Find the force on a straight conductor of length 0.30m carrying a current of 5.0A in the direction, where the field is T. i. b) A conductor of length 2.5m located at z=0, x=4m carries a current of 12.0A in direction. Find the uniform in the region if

    asked by fati on January 8, 2011
  40. physics

    A stationary 1.67 kg object is struck by a stick. The object experiences a horizontal force given b F = at-bt^2, where t is the time in milliseconds from the instant the stick first contacts the object. If a = 1500 N/ms and b = 20N/ms^3, what is the speed

    asked by sandhu on January 27, 2011
  41. Algebra

    find the measure of an angle whose supplement measures two times its measure

    asked by Help on January 22, 2011
  42. physics

    a ladder AP of length 5m inclined to a vertical wall is slipping over a horizontal surface with velocity 2m/s , when A is at a distance 3m from ground . what is the velocity of centre of mass at this moment?

    asked by jerf on January 16, 2011
  43. chemistry

    When a volume of H2 reacts with an equal volume of Cl2 (assume you have 1 L of each) at the same temperature and pressure, what volume of product having the formula HCl is formed? Question 4 answers

    asked by Anonymous on January 10, 2011
  44. physics

    a ball is thrown at an initial angle of 37 and initail velocity of 23.0 m/s reaches a maximum height h, as shwon in the Figure. With what initial speed must a ball be thrown straight up to reach the same maximum height h?

    asked by Anonymous on January 3, 2011
  45. Chemistry

    Calculate the pressure that ccl4 will exert at 40 of 1.00 mol occupies 28.0 L, assuming that (a) CCl4 obeys the ideal-gas equation (b) CCl4 obeys the Van der Waals equation. (a) PV = nRT P = nRT / V (b) (P + n^2a/V^2)(V - nb) = nRT CCl4 = a = 20.4

    asked by Anonymous on January 9, 2011
  46. financial analysis

    an item which may be converted to cash within one year or one operating cycle of the firm is classified as a

    asked by james on January 23, 2011
  47. physics

    Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are 0.35 L, 2.6 g/cm3; 0.25 L, 1.0 g/cm3; and 0.40 L, 0.60 g/cm3. What is the force on the bottom of the container due to these liquids? One

    asked by rock on January 28, 2011
  48. physics

    A ventilation fan has blades 0.25 m in radius rotating at 20rpm. What is the tangential speed of each blade tip? i don't understand how to do tangential speed.

    asked by Ann on January 11, 2011
  49. math

    A new physician saw 841 clients during the first five years of practice and 1072 the second. What percent volume increase

    asked by Anonymous on January 18, 2011
  50. Math

    Please help me with this If 2/3 of N is 4, then 1/2 of N is:

    asked by Becki on January 17, 2011
  51. physics

    A model rocket leaves the ground, heading straight up at 47 m/s. (a) What is its maximum altitude? m What are its speed and altitude at each of the following times? (b) 1 s m/s m (c) 4 s m/s m (d) 8 s m/s m

    asked by Jen on January 16, 2011
  52. physics

    A man leans over the edge of a cliff and throws a rock upward at 4.9 m/s. Neglecting air resistance, two seconds later the rock's speed is what?

    asked by susan on January 30, 2011
  53. Cylinder Height

    A cylinder has surface area of 402 cm2. The height is three times greater than the radius. What is the height of the cylinder?

    asked by Sydney on January 19, 2011
  54. Help Please!

    Charges of −4q are fixed to diagonally opposite corners of a square. A charge of + 5q is fixed to one of the remaining corners, and a charge of + 3q is fixed to the last corner. Assuming that ten electric field lines emerge from the + 5q charge, sketch

    asked by Brian on January 24, 2011
  55. Chem

    A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant

    asked by Shrell on January 19, 2011
  56. chemistry

    Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of

    asked by Deanne on January 9, 2011
  57. physics

    a ferry boat is sailing at 12 km/h 30 degrees west of north with respect to a river that is flowing at 6 km/h. in what direction, as observe from the shore, is the ferry boat is sailing?

    asked by Anonymous on January 30, 2011
  58. calculus

    find the volume formed by revolving the parabola y=4-x^2 in the first quadrant: a.) about x=0 b.) about x=2

    asked by nicko on January 3, 2011
  59. Geometry

    1. MO bisects LMN, LMN = 5x-23, LMO = x+32. Find NMO. >>I got the answer 45.75 but I got it wrong. I do not know how to solve this question and I have tried all that I know. Please help..

    asked by Needs Help on January 24, 2011
  60. math

    What is the correct restatement of 32%?

    asked by Anonymous on January 18, 2011
  61. science

    In a certain plant, smooth edge leaves(S) are dominant over roughed edge leaves (s)Two plants heterozygous for smooth edges are crossed. What proportion of the offspring are expected to be heterozygous for smooth edges leaves a)1/4 b)1/2 c)3/4 d 1

    asked by Anonymous on January 18, 2011

    A person whose weight is W=584 N doing push-ups. Find the normal force exerted by the floor on each hand each foot, assuming that the persons holds this person |=central gravity foot arm -------|-------- .840m .410m

    asked by EHm on January 10, 2011
  63. physics

    A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it

    asked by kevin on January 17, 2011
  64. physics

    The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation

    asked by thaokieu on January 30, 2011
  65. Physics

    Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges?

    asked by Pablo on January 16, 2011
  66. Physics

    Two people are carrying a uniform 788.0 N log through the forest. Bubba is 2.0 m from one end of the log (x), and his partner is 1.1 m from the other end (y). The log is 6.2 m long (z). What weight is Bubba supporting?

    asked by Joan on January 16, 2011
  67. Algebra

    Find the equation of the quadratic function f whose graph is shown below. Ponts on the graph are (-3,-1)(-2,-4) f(x)=

    asked by Rachal on January 25, 2011
  68. physics

    High-performance race cars can accelerate from 0 m/s to 27 m/s (60 mi/h) in about 4 s. To see how large the acceleration due to gravity is, determine the time required for an object dropped from rest to attain a speed of 27 m/s. Ignore air resistance.

    asked by thaokieu on January 30, 2011
  69. physics

    a student standing on the roof of a 50 meter high building kicks a stone at a horizontal speed of 4 meters per second, how much time is required for the stone to reach the level ground below?

    asked by jack on January 16, 2011
  70. Geography & World Cultures

    Find a formal factor that connects Egypt to Africa, to Europe, and to Southwest Asia ?

    asked by Katiee on January 6, 2011
  71. math

    A charity carnival requires three volunteer workers for each booth. If the carnival has 29 booths. How many volunteers must be recruited?

    asked by Anonymous on January 18, 2011
  72. Chemistry

    A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20°C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20°C). The bottle is brought outside and stored at 0.0°C. (See

    asked by Ashley on January 26, 2011
  73. Electr. and Magnetism

    1) A charge of 80nC is uniformly distributed along the x-axis from x= 0 to x= 2.0m. Determine the magnitude of the electric field at a point on the x-axis with x=8.0m. a] 30 N/C b] 15 N/C c] 48 N/C d] 90 N/C e] 60 N/C 2) 3 point charges, 2 positive and one

    asked by Allan on January 31, 2011
  74. Business

    What factors account for the resurgence of interest in Operation and Supply Chain Management (OSCM) today?

    asked by Jaison on January 31, 2011
  75. algebra

    WHY ISN'T SOMEONE HELPING ME WITH THIS QUESTION?? you receive a $25 gift card card to a sporting goods store for your birthday. you are looking at skateboards and want to spend no more than $85 of your own money. a. write and solve an inequality to find

    asked by blue13 on January 5, 2011
  76. geometry

    an angle is equal to one-third its complement what is the angle?

    asked by dina on January 25, 2011
  77. Chemistry

    what is the total number of moles in 80.0 grams of C2H5Cl (gram-formula mass=64.5grams/mole)? (1)0.806 (2)1.24 (3)2.48 (4)5.16 i appreciate any help.

    asked by Jason on January 3, 2011
  78. chemistry

    Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80.

    asked by rena on January 16, 2011
  79. algebra

    A basket contains 11 pieces of fruit: 4 apples, 5 oranges, and 2 bananas. Jonas takes a piece of fruit at random from the basket, and then Beth takes a piece at random. What is the probability that Jonas will get an orange and Beth will get an apple?

    asked by den on January 20, 2011
  80. Calc

    The number of bacteria in a culture is increasing according to the law of exponential growth. There are 125 bacteria in the culture after 2 hours and 350 bacteria after 4 hours. a) Find the initial population. b) Write an exponential growth model for the

    asked by Erica on January 6, 2011

    VWXYZ is a rectangle-based pyramid where WX=66 cm and XY=32cm. The vertex is vertically above the center of the base. Given that the slant heights VA and VB are 56 cm and 63 cm respectively, find the total surface area of the pyramid. Additionally, find

    asked by Helen on January 23, 2011
  82. Trigonometry

    A carnival Ferris wheel with a radius of 7 m makes one complete revolution every 16 seconds. The bottom of the wheel is 1.5 m above the ground. The ride starts at the bottom. Find the sinusoidal function that models this Ferris wheel in terms of time (t)

    asked by Tabitha on January 14, 2011
  83. Chemistry

    given the balanced equation representing a reaction: 4NH3+5O2-->4NO+6H2O what is the minimum number of moles of O2 that are needed to completely react with 16 moles of NH3? (1)16 mol (2)20.mol (3)64 mol (4)80. mol i think its 2 but im not sure.

    asked by Destinee on January 2, 2011
  84. math

    find the sum and product of the roots of the equation 5x^2+11x-3=0 ?

    asked by luis on January 18, 2011

    A simple pendulum, consists of an object suspended by a string. The object is assumed to be a particle. The string, with its top end fixed, has negligible mass and does not stretch. In the absence of air friction, the system oscillates by swinging back and

    asked by vm on January 6, 2011
  86. Trig

    The diameter of the wheels on your car (including the tires) is 25 inches. You are going to drive 305 miles today. Each of your wheels is going to turn by an angle of how many degrees.

    asked by Anonymous on January 27, 2011
  87. Math grade 8

    a jar contains 4 white chips, 5 purple chips and 1 black chip. chips are selected randomly one at at time and are not replaced. What is the probability of choosing a purple then black chip?

    asked by Kaelin on January 23, 2011
  88. Chemistry

    Explain, in terms of electronegativity, why an H-F bond is expected to be more polar than an H-I bond.

    asked by Dee on January 4, 2011
  89. AP Calculus

    The radius of a circle is decreasing at a constant rate of 0.1 centimeters per second. In terms of the circumference C, what is the rate of the area of the circle, in square centimeters per second? a. -(0.2)pie C b. -(0.1)C c. -(0.1)C/2 pie d. (0.1)^2C e.

    asked by Naz on January 18, 2011
  90. Science-Physics

    You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of .50 m/s? (b) How much work do you do if you push the box for 35 s?

    asked by Erica on January 9, 2011
  91. Geometry

    Find the area of the following ellipse (round to nearest tenth). 2a = 10 cm; 2b = 24 cm. a = How many cm2?

    asked by Ivan on January 16, 2011
  92. math

    What number is the solution to the equation -9(k-17) =-54 a)-26 b)23 c)28 d)37

    asked by Anonymous on January 20, 2011
  93. math

    What might you have if you don't feel well?

    asked by lolololol on January 15, 2011
  94. MATH

    The Megabuck Hospital Corp. is to build a state-subsidized nursing home catering to homeless patients as well as high-income patients. State regulations require that every subsidized nursing home must house a minimum of 770 homeless patients and no more

    asked by LIZ on January 28, 2011

    Both Greta and Fred were on the bus that arrived in Pittsburgh. Fred was glad to be home. He looked forward to visiting with old friends. Greta, on the other hand, dreaded seeing her old boyfriend. She already missed her days in New York City. 2. What can

    asked by shamso on January 27, 2011
  96. english

    only five days later, the child itch rash had almost completely disappeared which word is the simple subject in the sentence above? a) five b) days c) Childs d) rash

    asked by Anonymous on January 26, 2011
  97. 7th grade science

    A woman with normal color vision has a colorblind daughter. What are the genotypes and phenotypes of BOTH parents?

    asked by SkaterGirl on January 5, 2011
  98. math

    what number gives the same result when multiplied by 6 as it does when 6 is added to it?

    asked by Joseph on January 25, 2011
  99. Physics

    Mars has a radius of about 0.53 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.

    asked by josh on January 31, 2011
  100. physics

    a ladder AP of length 5m inclined to a vertical wall is slipping over a horizontal surface with velocity 2m/s , when A is at a distance 3m from ground . what is the velocity of centre of mass at this moment?

    asked by sreeram on January 16, 2011